GPR Leak Detection · Radar + acoustic, one report
Radar sees what leaks do to the ground. Acoustics proves where they live.
Ground-penetrating radar applied to finding water where it shouldn't be: saturated zones under slabs, washouts and voids around failing pipes, buried lines located before acoustic crews listen. Radar sees the consequence; acoustics confirms the cause — Leak.ca runs both. Five core applications, each with dedicated pages for all 47 BC cities — and the honest physics of what radar can and cannot do in BC ground, stated on every one.
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The five GPR leak applications
Each with its own methodology page and 47 city pages — the deepest GPR-leak coverage in BC:
GPR Underground Water Leak Detection
Saturation and washout zones mapped along buried lines.
Service + 47 city pagesGPR Slab Leak Detection
In-slab lines located and wet zones bounded before cutting.
Service + 47 city pagesGPR Pipe Leak Detection
Pipe routing + anomaly mapping where drawings are fiction.
Service + 47 city pagesGPR Sewer Leak Detection
Exfiltration consequences — voids and saturated bedding — found from above.
Service + 47 city pagesGPR Pool Leak Detection
Deck voids and saturated zones around vessels and buried returns.
Service + 47 city pagesWhy radar belongs in leak work
- Maps what acoustics can't hear: voids, washouts, saturation
- Locates the pipe AND the rebar before anyone cuts concrete
- Works through slabs, pavement, and soil from one side
- Paired with acoustic confirmation — radar + listening, one report
How a GPR leak job runs
- 1
Scope the question
Is the job 'find the pipe', 'bound the wet zone', 'check for voids', or all three? Antenna selection (1.6 GHz concrete to 200 MHz deep ground) follows the question and the ground.
- 2
Grid scan
Systematic passes over the suspect area — slab, pavement, or soil — capturing reflections from pipes, rebar, voids, and moisture-changed ground.
- 3
Anomaly interpretation
Radar data is read against the site's geology and construction: which anomalies are utilities, which are voids, which are saturation signatures worth acoustic follow-up.
- 4
Confirm & mark
Acoustic and moisture methods verify the leak itself where needed; everything is surface-marked and reported with depths — the map your repair crew digs or cuts from.
GPR leak detection, answered
Can GPR actually 'see' a water leak?
It sees what leaks do to the ground. Radar reflects off contrasts — and water changes ground's dielectric behaviour dramatically. A leak shows as saturation signatures, disturbed or washed-out bedding, and voids where soil migrated into a failing pipe. GPR maps those consequences and the pipe's exact position; acoustic methods then confirm the active escape point. The pairing is the method — neither alone is the whole answer.
When is GPR the right call versus acoustic-only detection?
GPR earns its place when geometry is unknown or the ground itself is in question: no reliable drawings, suspected voids under slabs, pavement settling near a line, in-slab pipes that must be located before cutting, or rebar that must be cleared before coring into a repair. If the pipe's route is known and the question is purely 'where along it is the leak' — acoustics may be all the job needs, and we'll say so.
What's the danger of repairing a slab leak WITHOUT scanning first?
Two expensive surprises: cutting into rebar or post-tension strands (a $20,000+ mistake in PT slabs), and opening the slab at the wet spot rather than the leak — water travels under slabs, so the stain and the source routinely sit metres apart. A scan locates the line, clears the reinforcement, and bounds the moisture before the saw starts.
Does soil type really change GPR performance that much?
It's the single biggest factor. Dry sands and gravels are radar-friendly to good depth; wet clays and silts absorb signal fast and shrink the useful range. That's why every city page here states the local ground honestly — and why our crews pick antennas and expectations to match the dirt, not the brochure.
Which GPR leak services have dedicated city pages?
All five core applications — underground water leak detection, slab leak detection, pipe leak detection, sewer leak detection, and pool leak detection — carry dedicated pages for every one of the 47 BC cities we serve, each with that city's real ground conditions stated honestly. This hub also has its own page per city, linking the local set together.
Is GPR safe to use inside occupied buildings?
Completely — GPR emits less radio-frequency energy than a phone. No evacuations, no permits, no interference with equipment. Scanning slabs in occupied homes, offices, and care facilities during business hours is routine.
Full GPR services hub (33 services)·GPR technology explained·GPR pillar guide·gpr.leak.ca specialist hub
GPR leak detection in every BC city
Local pages with each city's real radar conditions — soil honesty included:
Scan before you cut. Listen before you dig.
Free phone consult — whether radar, acoustics, or both fit your job, with a firm quote in five minutes.